<template>
  <div class="permission-container">
    <div class="app-container">
      <!-- 表格 -->
      <el-card>
        <div style="text-align: right; margin-bottom: 20px">
          <el-button type="primary" size="small" @click="hAdd('0',1)">添加权限</el-button>
        </div>
        <el-table border :data="permissionList" row-key="id">
          <el-table-column label="名称" prop="name" />
          <el-table-column label="标识" prop="code" />
          <el-table-column label="描述" prop="description" />
          <el-table-column label="操作">
            <template #default="{row}">
              <el-button v-if="row.type===1" type="text" @click="hAdd(row.id,2)">添加</el-button>
              <el-button type="text" @click="hEdit(row)">编辑</el-button>
              <el-button type="text" @click="hDel(row.id)">删除</el-button>
            </template>
          </el-table-column>
        </el-table>
      </el-card>

      <el-dialog :visible.sync="showDialog" :title="isEdit?'编辑':'添加'" :close-on-press-escape="false" :close-on-click-modal="false" @closed="hClose">
        <!-- 表单内容 -->
        <el-form ref="formRef" label-width="100px" :rules="rules" :model="formData">
          <el-form-item label="权限名称" prop="name">
            <el-input v-model="formData.name" />
          </el-form-item>
          <el-form-item label="权限标识" prop="code">
            <el-input v-model="formData.code" />
          </el-form-item>
          <el-form-item label="权限描述">
            <el-input v-model="formData.description" />
          </el-form-item>
          <el-form-item label="权限启用">
            <el-switch
              v-model="formData.enVisible"
              active-text="启用"
              active-value="1"
              inactive-text="不启用"
              inactive-value="0"
            />
          </el-form-item>
        </el-form>
        <template #footer>
          <div style="text-align: right;">
            <el-button @click="showDialog = false;$message.info('已取消操作')">取消</el-button>
            <el-button type="primary" @click="hSubmit">确定</el-button>
          </div>
        </template>
      </el-dialog>

    </div>
  </div>
</template>
<script>
import { tranListToTreeList } from '@/utils'
import {
  getPermissionList,
  addPermission,
  delPermission,
  updatePermission
} from '@/api/permisson'
export default {
  name: 'Permissions',
  data() {
    const validCode = (rule, value, callback) => {
      let list = this.originList
      if (this.isEdit) {
        list = this.originList.filter((item) => item.id !== this.formData.id)
      }
      list.map((it) => it.code).includes(value)
        ? callback(new Error(value + '已经占用'))
        : callback()
    }
    const validName = (rule, value, callback) => {
      let list = this.originList.filter(
        (item) => item.pid === this.formData.pid
      )
      if (this.isEdit) {
        list = this.originList.filter(
          (item) =>
            item.pid === this.formData.pid && item.id !== this.formData.id
        )
      }
      list.map((it) => it.name).includes(value)
        ? callback(new Error(value + '已经占用'))
        : callback()
    }
    return {
      permissionList: [],
      list: [],
      showDialog: false, // 是否显示弹层
      formData: {
        name: '', // 名称
        code: '', // 权限标识
        description: '', // 描述
        enVisible: '0', // 开启
        pid: '', // 添加到哪个节点下
        type: '' // 类型
      },
      isEdit: false,
      rules: {
        code: [
          { message: '不能为空', required: true, trigger: 'blur' },
          { validator: validCode, trigger: 'blur' }
        ],
        name: [
          { message: '不能为空', required: true, trigger: 'blur' },
          { validator: validName, trigger: 'blur' }
        ]
      },
      originList: [] // 在做校验时需要用到的数据
    }
  },
  created() {
    this.loadPermissionList()
  },
  methods: {
    async doEdit() {
      try {
        const res = await updatePermission(this.formData)
        console.log('更新权限信息', res)
        // 保存数据
        this.showDialog = false
        this.loadPermissionList()
        this.$message.success(res.message)
      } catch (err) {
        console.log('更新权限信息', err)
        this.$message.warning(err)
      }
    },
    hEdit(row) {
      this.isEdit = true
      this.showDialog = true
      this.formData = { ...row }
    },
    async doDel(id) {
      try {
        const res = await delPermission(id)
        console.log('删除权限', res)
        this.showDialog = false
        this.loadPermissionList()
        this.$message.success(res.message)
        // 保存数据
      } catch (err) {
        console.log('删除权限', err)
        this.$message.error(err)
      }
    },
    hDel(id) {
      this.$confirm('此操作将永久删除该权限, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      })
        .then(() => {
          this.doDel(id)
        })
        .catch(() => {
          this.$message.info('已取消删除')
        })
    },
    async doAdd() {
      try {
        const res = await addPermission(this.formData)
        console.log('添加权限', res)
        this.showDialog = false
        this.loadPermissionList()
        this.$message.success(res.message)
        // 保存数据
      } catch (err) {
        console.log('添加权限', err)
      }
    },
    hSubmit() {
      this.$refs.formRef.validate((valid) => {
        if (!valid) return
      })
      this.isEdit ? this.doEdit() : this.doAdd()
    },
    hAdd(pid, type) {
      this.isEdit = false
      this.showDialog = true
      this.formData.pid = pid
      this.formData.type = type
    },
    async loadPermissionList() {
      try {
        const res = await getPermissionList()
        console.log('获取权限列表', res)
        this.originList = res.data.map(({ id, pid, name, code }) => ({
          id,
          pid,
          name: name.trim(),
          code
        }))
        this.permissionList = tranListToTreeList(res.data)
        // 保存数据
      } catch (err) {
        console.log('获取权限列表', err)
      }
    },
    hClose() {
      this.formData = {
        name: '', // 名称
        code: '', // 权限标识
        description: '', // 描述
        enVisible: '0', // 开启
        pid: '', // 添加到哪个节点下
        type: '' // 类型
      }
      this.$refs.formRef.resetFields()
    }
  }
}
</script>
